Stereotype-plate-shaving machine.



H. A. W. WOOD. STEREOTYPE PLATE SHAVIN G MACHINE.

APPLICATION FILED AUGJI. 1'910.

Patented Mania 1917;

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TEE STATES PATENT @FFTQE.

HENRY A. WISE VTOOD, OF NEW YORK, N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, T WOOD NEWSPAPER MACHINERY CORPORATION, OF NEW YORK, N. Y.

STEREO'IYPE-PLATE-SHAVING MACHINE.

To all whom'z't may concern:

Be it known that I, HENRY A. Wise Noon, citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a new and useful Stereotype-PlateShaving Machine, of which the following is a specification. I

This invention relates to a machine for finishing stereotype printing plates and the like, but is particularly adapted for shaving flat plates, although capable of general use. i

The principal objects of the invention are to provide a very simple and rigid con struction which the shaving blade can be firmly held in position and so supported that it will have no vibratory or chattering motion even when taking a very heavy cut. Also to provide very convenient location of trimming knives similarly supported and having the same advantage an improved means for supporting the printing plate while it is being drawn through the shaving and trimming mechanism, and an improved means for engaging the plate and moving it along on said supporting means.

Further objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which Figure 1 is a plan of the machine constructed in accordance with this invention with parts removed.

Fig. 2 is a side elevation thereof,

F 3 is an enlarged detail view of one of the elements, Fig. 4 is a side view of an element shown in Fig. 3, and Fig. 5 is a longitudinal sectional view of the casting box "ith the parts separated and in position for the redrawal of the plate.

The invention is shown as applied to a machine in which the nozzle of a metal pump delivers metal to a casting box having an upper section 11a.nda'lower section 12. The lower section is movable up and down and when it moves down it leaves the cast plate suspended from the upper casting box. The mechanism for accomplishing this result is not shown in detail as it forms the subject of a separate application, Serial Number 537,700, filed January 12, 1910. As far as this case is concerned, the parts 11 and 12 can be consid ered merely as plate supporting numbers.

Specification of Letters Patent.

Patented Mar. 13, 1917.

Application filed August 11, 1910. Serial No. 576,722.

on guides 13 on the frame of the machine is arranged a long table 14 provided with a rack 15; This rack is operated by an oscillating lever 16 having a gear segment 17 and meshing with a pinion 18 on a shaft 19 on'which is a gear 20 meshing with the rack. By this construction the table can be reciprocated toward and from the casting box. When brought into theposition shown in the drawings the plate is engaged by one-or more bars 21 which are beveled on one side and both ends as shown in Figs. 3and 4 respectively. These are beveled on the surface toward the mold and provided with an abrupt surface 22 on the opposite side. 'They are pressed upwardly by springs 28 as will be obvious. These parts are carried by a support 24 mounted on the end of the table.

When the table reaches the position shown the bars have been pressed down by the plate and the springs have again pressed them back to engage in the notches in the lower side of the cast plate. Then when the table moves back it takes the plate with it out of the casting box and draws it along between a pair of rigid standards 25. All this time the plate is firmly sup ported on the support 24%. These standards are located on opposite sides of the frame of the machine and are connected by aframe comprising a top cross bar 27, a web 28 extending downwardly therefrom, and an in elined web 29 extending rearwardly and. upwardly from the bottom of the web 28. These parts preferably are integral and on the front and at the bottom of the web 28, is adjustably. secured a shaving knife or blade 30 of a width sufficient to shave the entire back of the plate. It will be seen that on account of the rigid construction of the non-movable standards 25, and particularly on account of the fact that the web 29 extends directly back from the blade 30, a strong support is provided for this blade and it is absolutely rigid so that it cannot vibrate or chatter under any ordinary conditions of use. This gives a material advantage over those forms of shaving devices in which a movable blade is employed. This construction also reduces the number of moving parts of the whole machine.-

Located at the-rear of the web 29 but near the ends of the same are a pair of trimming knives 31 for trimming the edges of These knives also are rigidly the plate.

and cannot chatter and vibrate supported in use.

As the lever 16 oscillates in a direction to bring the rack and table 13 back, the top or back of the plate will be shaved and then its edges will be trimmed in a positive and true manner. During these operations although the plate is moving it has no motion relative to its support.

When the table reaches the end of its stroke a second carrier 33 moves transversely of the table and slides the plate from the same on supports 3% at the side, where it can be operated upon independently by other mechanism if desired. During this motion the plate depresses the bars 21 by riding over the inclines at one end of each bar. lhe carrier 33 is shown as operated by a shaft driven, by mechanism not shown, through a pinion 36 and having a gear 37 meshing with a rack 39 connected to a slide 4-0 on which the carrier is mounted. This slide is guided on a fixed transverse guide 41 on the frame. The shaft 35 is caused to rotate a certain number of times in one direction and then reverse so as to bring the carrier back. This brings the carrier 33 back in time so as to be ready to engage the edge of the next plate at the end of its forward movement.

It will be seen that this invention provides a most simple and effective mechanism for shaving the plate and also if necessary, for trimming the edges thereof, and that chattering and vibration are practically avoided and the amount of mechanism required materially reduced.

While I have illustrated and described a preferred embodiment of .the invention I am aware that many modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited to the details shown and described, but what I do claim is 1. In a stereotype plate finishing machine, the combination of a frame, a table movable thereon, a support fixed to said table, a spring-pressed bar on said support adapted to engage a plate and carry the same, and means for shaving the plate as said support moves.

2. In a stereotype plate finishing machine, the combination of a frame, a table movable Copies of this patent may be obtainedfor five cents each, by addressing the carrying a printing plate,

'blade over said support, means thereon, a support fixed to the end of said table, a springpressed bar on said support adapted to engage a plate and carry the same, and a stationary shaving blade in position to shave the back of the plate as it is moved on said support.

In a stereotype plate finishing machine, the combination of a movable table for ards located on opposite sides of the table, a frame mounted between the standards and comprising a bar connecting the tops of said standards, a web projecting downwardly from the bar to a point near the top of the table, and a web projecting backwardly and upwardly at an angle from the bottom. of the first named web, each of said webs extending from one standard to the other, and'a shaving blade carried on the front side of the first named web.

I. In a stereotype plate finishing machine, the combination of a horizontal movable support for the stereotype plate, a shaving for moving the support for shaving the plate, and means movable transversely to the direction of motion of the table for removing the shaved stereotype plate therefrom in a transverse direction in the same plane.

5. In a stereotype plate finishing machine, the combination with means adapted to support a stereotype printing plate on the bottom thereof, of a movable support or table adapted to move under said means to receive the plate thereon and having means for engaging the plate, means for withdrawing the table, and means for finishing the surface of the'plate as it is withdrawn on said table.

6. In a stereotype plate finishing machine, the combination with an upper and a lower member adapted to support a stereotype printing plate between them, the lower member being adapted to be lowered from the upper member leaving the plate supported by the upper member when separated and having means for engaging the plate, means for withdrawing the table. and a stationary blade for shaving the surface of the plate.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing' witnesses.

HENRY A. WISE WOUD. Witnesses F. W. HowLANn, ELIZABETH GALDBECK.

Washington, D. G3

a pair of stand' fCommi'ssioner of Patents, 

